FS5908

Rev. 1.2

17/22

14.4 Default Status

When power on or CS is produced, FS5908 will enter default operation mode. For its status, please refer to the

diagram on Page11.

Initial States:

1.

Pointer default: 00h

2.

Control register default: 00h

3.

The corresponding location of OTPX<7:0> and PROM1~PROM9:

OTP1<7:0> ← PROM1<7:0>

OTP2<7:0> ← PROM2<7:0>

OTP3<7:0> ← PROM3<7:0>

OTP4<7:0> ← PROM4<7:0>

OTP5<7:0> ← PROM5<7:0>

4.

TLowLim<10:0> ← {PROM8<7:5>, PROM6<7:0>}

5.

TUpLim<10:0> ← {PROM8<4:2>, PROM7<7:0>}

6.

OTP9<7:0> ← PROM9<7:0>

7.

The upper and lower bound setup will load in the upper and lower bound register when power reset or CS

reset.

8.

Default value means the values resource and status of the corresponding register during power reset or

CS reset.

9.

PROM8<0> is close bit. When it is programmed as High (logic 1), no any programming action can be

done to PROM again.

10.

PROM9<1> is addlock bit. When it is programmed as High (logic1), I2C address is {PROM9<7:2>, A0},

or I2C address is {100100,A0}

FS5908 can be connected to independent thermoregulator without via I2C interface control so that all of the

registers of FS5908 will enter the default status.

14.5 Test Register (Pointer=04h, Pointer=05h, Readable and Writable)

Reg4<7:0> and Reg5<7:0> are the test register for mass production, please ignore them in general use, lest

influence IC normal operation.

14.6 I

Pointer

Name

Type

7

6

5

4

3

2

1

0

h'06

Reg6

R

I

addlock

(rv)

Reg6<7:2>:I

Reg6<1>: A6 ~ A1 can be setup via programming PROM in the chip. When A0 is 0, it is 100100; when A0 is 1,

A6 ~ A1 ← PROM9<7:2>.

Reg6<7:2>:register stores I

address A6 ~ A1 is default 100100 and will not be stored in Reg6<7:2>. This should be noticed in use.